CN202994483U - Test device of automobile magneto-rheological suspension system - Google Patents
Test device of automobile magneto-rheological suspension system Download PDFInfo
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- CN202994483U CN202994483U CN 201220335390 CN201220335390U CN202994483U CN 202994483 U CN202994483 U CN 202994483U CN 201220335390 CN201220335390 CN 201220335390 CN 201220335390 U CN201220335390 U CN 201220335390U CN 202994483 U CN202994483 U CN 202994483U
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Abstract
The utility model discloses a test device of an automobile magneto-rheological suspension system. The test device of the automobile magneto-rheological suspension system comprises a mechanical rack, a cam exciting unit and a computer measurement and control system. The cam exciting unit is arranged at the bottom of the mechanical rack, provides a sine displacement excitation needed by a test, and simulates an actual road input; and the computer measurement and control system comprises a displacement sensor, an acceleration sensor, a tension and pressure sensor, a data collection card, a computer, a knob switch and a universal change over switch. A regulation and control mode for simulating a road input excitation frequency can be selected agilely by setting the knob switch, and a power supply of a magneto-rheological damper can be selected agilely by setting the universal change over switch when a characteristic test of the magneto-rheological damper is carried out. The test device possesses a concise and compact overall electromechanical structure, the mechanical rack is simple in structure, convenient in processing and manufacturing and good in buffer vibration absorption effect, can be moved and resettled conveniently and agilely via universal wheels at the bottom, and can better satisfy the requirements of a vibration damping performance test of a magneto-rheological suspension and the characteristic test of the magneto-rheological damper.
Description
Technical field
The utility model relates to a kind of dynamo-electric test unit, relates in particular to a kind of auto magnetorheological suspension system test unit.
Background technology
In recent years, along with the development of automotive electronic technology and MR damper technology, become the focus of research based on the auto magnetorheological suspension of MR damper technology.The auto magnetorheological suspension belongs to half active electronics suspension, and its performance is better than traditional passive suspension and is easy to realization, has a extensive future, and market potential is huge.The performance of the characteristic of MR damper and auto magnetorheological suspension all needs to analyze, estimate, improve by experimental study.Existing auto magnetorheological suspension testing table is generally all simulated 1/4th automobile suspension systems, mainly has following problem: Mechatronic Systems structure relative complex, processing and fabricating inconvenience; The testing table complete machine generally adopts the firm banking structure, and mobile resettlement is inconvenient; In MR damper attribute testing and rheological suspension performance test, the operation control mode is more single.
Summary of the invention
The technical problems to be solved in the utility model is to provide a kind of auto magnetorheological suspension system test unit, its complete machine Mechatronic Systems structure is simpler and more direct, processing and manufacturing is more convenient, optional operation control mode abundanter, mobile convenient removal in test, both can be used for the damping property test of rheological suspension system, also can be used for the attribute testing of MR damper.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of auto magnetorheological suspension system test unit comprises mechanical stand, cam exciting unit and computer measurement and control system.
Described mechanical stand comprises two mechanical stands of difference based on a general frame, corresponds respectively to rheological suspension system's damping property test and two kinds of situations of MR damper attribute testing.when carrying out rheological suspension damping property when test, described mechanical stand is made of web member, tire fork, tire, four frame support pin, four universal wheels under channel-section steel frame, two of left and right column, four linear slider, four slide block web members, two of left and right line slideway, MR damper, mass, upper bearing plate, damper upper connector, volute spring, six spring conductor rods, damper, the bottom of channel-section steel frame is supported by four frame support pin, two columns in left and right are bolted and are fixed in channel-section steel frame upper end, two of left and right line slideway is separately fixed on the column of two of left and right by screw, two columns, two line slideways are all perpendicular to the channel-section steel frame of horizontal positioned, cam exciting cellular installation is in the bottom of channel-section steel frame, tire tread is pressed on the cam upper plate, tire is bolted and is fixed on the tire fork, tire fork center, upper surface has been screwed web member under damper, the left and right end face of tire fork is connected with two slide block web members by screw, the slide block web member is connected with linear slider by screw, linear slider is arranged on line slideway and can moves vertically, the tailpiece of the piston rod of MR damper is connected with web member under damper by straight pin, the upper end of MR damper is connected with the damper upper connector by straight pin, the damper upper connector is screwed the lower surface in upper bearing plate, the left and right end face of upper bearing plate is connected with two other slide block web member by screw, volute spring is between upper bearing plate and tire fork, and be placed in the outside and coaxial with MR damper of MR damper, between upper bearing plate and tire fork, displacement transducer is installed also, mass is bolted and is arranged on the bearing plate upper end, acceleration transducer is laid in the mass upper end, when carrying out the MR damper attribute testing, described mechanical stand is made of web member, stud bolt, eight sleeves, two upright post connecting plates, four frame support pin, four universal wheels under channel-section steel frame, two of left and right column, two of left and right line slideway, MR damper, upper bearing plate, damper upper connector, damper, the channel-section steel frame is supported and horizontal positioned by four frame support pin, be fixed in two of the left and right column of channel-section steel frame upper end, two line slideways that are fixed on the column of two of left and right are all installed perpendicular to surface level, web member under damper is installed on the cam upper plate successively, MR damper, the damper upper connector, stud bolt, pull pressure sensor, upper bearing plate, upper bearing plate is connected with the upright post connecting plate at two ends, left and right with screw, two upright post connecting plates are bolted and are fixed on left and right pillar, eight sleeves that play the role of positioning are installed between upright post connecting plate and column, the bottom of described mechanical stand is provided with four universal wheels, and universal wheel is fixed in channel-section steel frame bottom by screw, can realize that easily the complete machine of described auto magnetorheological suspension system test unit moves resettlement by universal wheel when needed.
Described cam exciting cellular installation is in the bottom of described mechanical stand, comprises frequency converter, threephase asynchronous machine, elastic dowel pin shaft coupling, two rolling bearing units, rubber blanket, cam drive axle, cam mechanism; Described cam mechanism is made of cam upper plate, cam, cam lower plate, two coupling shafts, two polished rod support members, two guiding polished rods, two linear bearings; Frequency converter is connected with threephase asynchronous machine by cable; Shaft coupling one end connects the output shaft of threephase asynchronous machine, and the other end connects the cam drive axle; The cam drive axle is supported by two rolling bearing units, passes through the key connection for transmission between cam drive axle and cam; Cam upper end, lower end contact with cam upper plate, cam lower plate respectively, and cam upper plate, cam lower plate are connected to a combined integrate gear train by two coupling shafts, nut, spring washers; Two linear bearings are screwed in the cam upper plate; One end of guiding polished rod is fixed in the polished rod support member, and the other end passes from the linear bearing endoporus; Two polished rod support members are fixed on the bottom mounting plane of channel-section steel frame; Between the mounting plane of threephase asynchronous machine base, two rolling bearing units bases and channel-section steel frame bottom, rubber blanket is installed all, vibration and the impact that is delivered to channel-section steel frame bottom in work had buffering absorbing effect, make machine system work more steady.
Described computer measurement and control system comprises displacement transducer, acceleration transducer, pull pressure sensor, data collecting card, computing machine, rotary switch, D.C. regulated power supply, universal seclector, constant current source, current sensing means; In rheological suspension damping property test, displacement transducer is vertically mounted between bearing plate and tire fork, and acceleration transducer is installed on the mass upper end; In the MR damper attribute testing, pull pressure sensor is fixed by bolts to centre position, bearing plate lower end, and displacement transducer is vertically mounted between bearing plate and cam upper plate; Each sensor signal all is input to computing machine by data collecting card, export two path control signal through data collecting card again after the machine calculation process as calculated, wherein one tunnel control signal connects the input end of rotary switch, the output termination frequency converter of rotary switch, another road control signal connects universal seclector; Another input termination D.C. regulated power supply of universal seclector, its output termination constant current source, the field coil connected in electrical series of constant current source, current sensing means and MR damper connects; Described current sensing means can be current sensor for detection of the size of current that is input in the MR damper field coil, or the alternating current-direct current amp gauge, or universal electric meter, and satisfies current range and be not less than 2 amperes.
The utility model is compared with background technology, the beneficial effect that has is: the auto magnetorheological suspension system test unit of employing has the whole electromechanical structure of concision and compact, the mechanical stage shelf structure is simple, reliable and stable, can be simple by universal wheel mobile resettlement flexibly and easily, the processing and manufacturing of bottom, easy installation and removal, buffering shock attenuation result be good; By but the control methods of rotary switch flexible choice simulated roadway input stimulus frequency are set, both can select come the regulating electric machine rotating speed and then regulate the excitation frequency that simulated roadway is inputted by the computer control frequency converter, the excitation frequency that also can select frequency converter hand-manipulated to come the regulating electric machine rotating speed and then regulate the simulated roadway input; When carrying out the MR damper attribute testing, by but the power supply source of universal seclector flexible choice MR damper is set, both can select D.C. regulated power supply is constant current source-MR damper system power supply, and also can select by the computer export control signal is constant current source-MR damper system power supply; The utility model can satisfy the requirement of the test of rheological suspension damping property and MR damper attribute testing preferably.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples.
The front view of the utility model auto magnetorheological suspension system test unit when Fig. 1 is the test of rheological suspension damping property.
When Fig. 2 is the test of rheological suspension damping property, the left view of the utility model auto magnetorheological suspension system test unit, wherein removed threephase asynchronous machine, elastic dowel pin shaft coupling, rolling bearing units and frequency converter.
The front view of the utility model auto magnetorheological suspension system test unit when Fig. 3 is the MR damper attribute testing.
Fig. 4 is the Mechatronic Systems general illustration of the utility model auto magnetorheological suspension system test unit.
Fig. 5 is the complete section left view of web member under damper.
Fig. 6 is the complete section front view of damper upper connector.
in figure: threephase asynchronous machine 1, elastic dowel pin shaft coupling 2, rolling bearing units 3, cam drive axle 4, rubber blanket 5, frequency converter 6, channel-section steel frame 7, column 8, linear slider 9, slide block web member 10, line slideway 11, displacement transducer 12, MR damper 13, mass 14, acceleration transducer 15, upper bearing plate 16, damper upper connector 17, volute spring 18, spring conductor rod 19, under damper, web member 20, tire fork 21, tire 22, frame support pin 23, universal wheel 24, cam upper plate 25, cam 26, cam lower plate 27, coupling shaft 28, polished rod support member 29, guiding polished rod 30, linear bearing 31, stud bolt 32, pull pressure sensor 33, sleeve 34, upright post connecting plate 35, data collecting card 36, computing machine 37, rotary switch 38, D.C. regulated power supply 39, universal seclector 40, constant current source 41, current sensing means 42.
Embodiment
Fig. 1, Fig. 2, Figure 4 shows that rheological suspension damping property when test the utility model auto magnetorheological suspension system test unit, comprise mechanical stand, cam exciting unit and computer measurement and control system.wherein, described mechanical stand comprises channel-section steel frame 7, two columns 8 in left and right, four linear slider 9, four slide block web members 10, two line slideways 11 in left and right, MR damper 13, mass 14, upper bearing plate 16, damper upper connector 17, volute spring 18, six spring conductor rods 19, under damper, web member 20, tire fork 21, tire 22, four frame support pin 23, four universal wheels 24, channel-section steel frame 7 is framed structure and the horizontal positioned that are welded by channel-section steel, its bottom is supported by four frame support pin 23, also be fixed with four universal wheels 24 by screw simultaneously, its upper end is bolted two the vertical columns 8 in left and right is installed, two of left and right vertical line slideway 11 use screws are separately fixed on the column 8 of two of left and right, tire 22 tyre surfaces are pressed on the cam upper plate 25 of described cam exciting unit, tire 22 is bolted and is fixed on tire fork 21, tire fork 21 centers, upper surface have been screwed web member 20 under damper, tire fork 21 left and right end faces connect respectively two slide block web members 10 by screw, slide block web member 10 is connected with linear slider 9 by screw, linear slider 9 is arranged on line slideway 11 and can moves vertically, the tailpiece of the piston rod of MR damper 13 is connected with web member 20 under damper by straight pin, the upper end of MR damper 13 is connected with damper upper connector 17 by straight pin, damper upper connector 17 is screwed in the lower surface of upper bearing plate 16, the left and right end face of upper bearing plate 16 is connected with two other slide block web member 10 by screw, volute spring 18 is between upper bearing plate 16 and tire fork 21, and be placed in the outside and coaxial with MR damper 13 of MR damper 13, be placed in upper in volute spring 18, each three spring conductor rods 19 of lower end prevent that volute spring 18 from the lateral bending unstable phenomenon occuring, between upper bearing plate 16 and tire fork 21, displacement transducer 12 is installed also, mass 14 is bolted and is arranged on bearing plate 16 upper ends, acceleration transducer 15 is laid in mass 14 upper ends.described cam exciting unit provides the sinusoidal displacement excitation of the required simulated roadway input of test, by frequency converter 6, threephase asynchronous machine 1, elastic dowel pin shaft coupling 2, two rolling bearing units 3, cam drive axle 4, rubber blanket 5, cam mechanism forms, and described cam mechanism comprises cam upper plate 25, cam 26, cam lower plate 27, two coupling shafts 28, two polished rod support members 29, two guiding polished rods 30, two linear bearings 31, threephase asynchronous machine 1, two rolling bearing units 3, frequency converter 6, two polished rod support members 29 all are joined with bolts on the mounting plane of channel-section steel frame 7 bottoms, threephase asynchronous machine 1 base, the rubber blanket 5 of buffering absorbing all is installed between the mounting plane of two rolling bearing units 3 bases and channel-section steel frame 7 bottoms, make machine system work more steady, frequency converter 6 is connected with threephase asynchronous machine 1 by cable, elastic dowel pin shaft coupling 2 one ends connect threephase asynchronous machine 1 output shaft, the other end connects cam drive axle 4, cam drive axle 4 passes through the key connection for transmission by two rolling bearing units 3 supporting between cam drive axle 4 and cam 26, cam 26 upper ends, the lower end respectively with cam upper plate 25, cam lower plate 27 contacts, cam upper plate 25, cam lower plate 27 is by two coupling shafts 28, nut, spring washer is connected to a combined integrate gear train, and two linear bearings 31 are screwed on cam upper plate 25, and two guiding polished rod 30 homogeneous ends are fixed in polished rod support member 29, and the other end passes from linear bearing 31 endoporus.described computer measurement and control system comprises displacement transducer 12, acceleration transducer 15, data collecting card 36, computing machine 37, rotary switch 38, universal seclector 40, constant current source 41, current sensing means 42, sensor 12, 15 signal is undertaken being input to computing machine 37 after the A/D conversion by data collecting card 36, computing machine 37 output signals carry out exporting two path control signal after the D/A conversion through data collecting card 36 again, wherein one tunnel control signal connects the input end of rotary switch 38, the output termination frequency converter 6 of rotary switch 38, another road control signal connects universal seclector 40, the output termination constant current source 41 of universal seclector 40, constant current source 41, current sensing means 42, and the field coil connected in electrical series of MR damper 13 connects, described current sensing means 42 is current sensor, or alternating current-direct current amp gauge, or universal electric meter, and satisfy current range and be not less than 2 amperes.
Fig. 3, the utility model auto magnetorheological suspension system test unit when Figure 4 shows that the MR damper attribute testing are made of mechanical stand, cam exciting unit and computer measurement and control system.wherein, described mechanical stand comprises channel-section steel frame 7, two columns 8 in left and right, two line slideways 11 in left and right, MR damper 13, upper bearing plate 16, damper upper connector 17, under damper, web member 20, stud bolt 32, eight sleeves 34, two upright post connecting plates 35, four frame support pin 23, four universal wheels 24 are by channel-section steel frame 7, column 8, line slideway 11, frame support pin 23, the general frame structure that universal wheel 24 grades consist of is with the mechanical stand general frame structure in aforementioned rheological suspension damping property test, main difference be in: web member 20 under damper is installed on cam upper plate 25 successively, MR damper 13, damper upper connector 17, stud bolt 32, pull pressure sensor 33, upper bearing plate 16, between upper bearing plate 16 and cam upper plate 25, displacement transducer 12 is installed also, upper bearing plate 16 use screws are connected with the upright post connecting plate 35 at two ends, left and right, two upright post connecting plates 35 are bolted and are fixed on left and right pillar 8, and eight sleeves that play the role of positioning 34 are installed between upright post connecting plate 35 and column 8.Described cam exciting unit is with the situation in aforementioned rheological suspension damping property test.described computer measurement and control system comprises displacement transducer 12, pull pressure sensor 33, data collecting card 36, computing machine 37, rotary switch 38, D.C. regulated power supply 39, universal seclector 40, constant current source 41, current sensing means 42, sensor 12, 33 signal is input to computing machine 37 by data collecting card 36, computing machine 37 output signals connect respectively pushbutton switch 38 and universal seclector 40 after data collecting card 36, described in this computer measurement and control system and the test of aforementioned rheological suspension damping property, the main difference part of computer measurement and control system exists: there is no acceleration transducer 15, and replace for the pull pressure sensor 33 of measuring MR damper 13 damping forces, by the selection effect of universal seclector 40, MR damper 13 both can by D.C. regulated power supply 39 power supplies, also can be powered by computing machine 37 output signals.
The course of work of the present utility model is as follows:
When carrying out the test of rheological suspension damping property, frequency converter 6 drives threephase asynchronous machine 1 and rotates, driving cam drive axle 4 through elastic dowel pin shaft coupling 2 rotates, cam drive axle 4 is by 26 rotations of key connection for transmission driving cam, cam 26 driving cam upper plates 25, cam lower plate 27, linear bearing 31 do reciprocating linear motion with respect to fixing polished rod support member 29 and guiding polished rod 30, produce the displacement of sinusoidal rule, simulate the input of actual road surface.Vibration is transmitted vertically upward, the unsprung mass that two slide block web members 10 at tire 22, tire fork 21, tire fork 21 two ends, left and right and two linear slider 9 consist of is done vertical movement along line slideway 11, MR damper 13, volute spring 18 stretch and compression along with generation of vibration, two slide block web members 10 at mass 14, upper bearing plate 16, upper bearing plate 16 two ends, left and right and two linear slider 9 consist of sprung mass and do vertical movement along line slideway 11.Acceleration transducer 15 is measured the acceleration of sprung mass, the relative displacement that displacement transducer 12 is measured sprung mass and unsprung mass, each sensor signal is through data collecting card 36 input computing machines 37, computing machine 37 output control signals input to the field coil of MR damper 13 after data collecting card 36, universal seclector 40, constant current source 41, current sensing means 42, make the damping force of MR damper 13 generations by control requirement real time altering, thereby realize half active damping controls.Simultaneously, can select by the break-make of control handle switch 38 excitation frequency of simulated roadway input, when connecting rotary switch 38, can control the excitation frequency that frequency converter 6 comes regulating electric machine 1 rotating speed and then regulates the simulated roadway input by computing machine 37, and during release knob switch 38, the excitation frequency that can come regulating electric machine 1 rotating speed and then regulate the simulated roadway input by frequency converter 6 hand-manipulated.Move when resettlement when auto magnetorheological suspension system test unit needs complete machine, can regulate four frame support pin 23 and rise to vacant state, four universal wheels 24 of original place vacant state are dropped to ground contact, can realize that just complete machine moves.
when carrying out the MR damper attribute testing, its cam exciting unit transmission situation is with aforementioned rheological suspension damping property test situation, other main difference be in: first, the displacement of simulated roadway input is through cam upper plate 25, under damper, web member 20 is passed to the tailpiece of the piston rod of MR damper 13, and the upper end of MR damper 13, damper upper connector 17, stud bolt 32, pull pressure sensor 33 connects as one and all maintains static with upper bearing plate 16, thereby realize the two ends relative motion of the desired damper of MR damper attribute testing, the second, in work, pull pressure sensor 33 is measured the damping force of MR damper 13, displacement transducer 12 is measured MR damper 13 two ends relative displacements, each sensor signal is through data collecting card 36 input computing machines 37, machine 37 carries out corresponding data and processes and computing as calculated, and what just can obtain MR damper 13 shows merit family curve, speed characteristic curve and corresponding data.Three, by the selection effect of universal seclector 40, MR damper 13 both can by D.C. regulated power supply 39 power supplies, also can be powered by computing machine 37 output signals.
Above-mentioned embodiment is used for the utility model of explaining, rather than the utility model is limited, under the prerequisite that does not break away from spirit and scope of the present utility model, the utility model also can have various changes and modifications, such as can be in the left and right place, centre position of two column vertical height directions, connect or welding method is connected to a channel-section steel between two columns and consists of similar " H " type tower structure with bolt, to strengthen complete machine rigidity etc.Within these changes and improvements all drop on protection domain of the present utility model.
Claims (4)
1. auto magnetorheological suspension system test unit, comprise mechanical stand, cam exciting unit, computer measurement and control system, described cam exciting cellular installation is in the bottom of described mechanical stand, the sinusoidal displacement excitation of the required simulated roadway input of test is provided, by frequency converter (6), threephase asynchronous machine (1), elastic dowel pin shaft coupling (2), two rolling bearing units (3), cam drive axle (4), cam mechanism forms, described cam mechanism comprises cam upper plate (25), cam (26), cam lower plate (27), two coupling shafts (28), two polished rod support members (29), two guiding polished rods (30), two linear bearings (31), described computer measurement and control system comprises displacement transducer (12), acceleration transducer (15), pull pressure sensor (33), data collecting card (36), computing machine (37), three sensors (12, 15, 33) all be installed on described mechanical stand, it is characterized in that:
1) when carrying out the test of rheological suspension damping property, described mechanical stand is by channel-section steel frame (7), left and right two columns (8), four linear slider (9), four slide block web members (10), left and right two line slideways (11), MR damper (13), mass (14), upper bearing plate (16), damper upper connector (17), volute spring (18), six spring conductor rods (19), web member under damper (20), tire fork (21), tire (22), four frame support pin (23) consist of, the bottom of channel-section steel frame (7) is supported by four frame support pin (23), two columns in left and right (8) are bolted the top of being fixed in channel-section steel frame (7), two line slideways in left and right (11) are separately fixed on two columns in left and right (8) by screw, two columns (8), two line slideways (11) are all perpendicular to the channel-section steel frame (7) of horizontal positioned, cam exciting cellular installation is in the bottom of channel-section steel frame (7), tire (22) tyre surface is pressed on cam upper plate (25), tire (22) is bolted and is fixed on tire fork (21), tire fork (21) center, upper surface has been screwed web member under damper (20), the left and right end face of tire fork (21) is connected with two slide block web members (10) by screw, slide block web member (10) is connected with linear slider (9) by screw, linear slider (9) is arranged on line slideway (11) upward and can moves vertically, the tailpiece of the piston rod of MR damper (13) is connected with web member (20) under damper by straight pin, the upper end of MR damper (13) is connected with damper upper connector (17) by straight pin, damper upper connector (17) is screwed in the lower surface of upper bearing plate (16), the left and right end face of upper bearing plate (16) is connected with two other slide block web member (10) by screw, volute spring (18) is positioned between bearing plate (16) and tire fork (21), and be placed in the outside and coaxial with MR damper (13) of MR damper (13), between upper bearing plate (16) and tire fork (21), displacement transducer (12) is installed also, mass (14) is bolted and is arranged on bearing plate (16) upper end, acceleration transducer (15) is laid in mass (14) upper end, when carrying out the MR damper attribute testing, described mechanical stand is by channel-section steel frame (7), left and right two columns (8), left and right two line slideways (11), MR damper (13), upper bearing plate (16), damper upper connector (17), web member under damper (20), stud bolt (32), eight sleeves (34), two upright post connecting plates (35), four frame support pin (23) consist of, channel-section steel frame (7) is supported and horizontal positioned by four frame support pin (23), two columns in left and right (8) that are fixed in channel-section steel frame (7) upper end are all installed perpendicular to surface level with two line slideways (11) that are fixed on two columns in left and right (8), and web member under damper (20) is installed on cam upper plate (25) successively, MR damper (13), damper upper connector (17), stud bolt (32), pull pressure sensor (33), upper bearing plate (16), upper bearing plate (16) is connected with the upright post connecting plate (35) at two ends, left and right with screw, two upright post connecting plates (35) are bolted and are fixed on left and right pillar (8), and eight sleeves that play the role of positioning (34) are installed between upright post connecting plate (35) and column (8),
2) described mechanical stand also further includes four universal wheels (24), is individually fixed in channel-section steel frame (7) bottom with screw;
3) described cam exciting unit also further includes rubber blanket (5), is arranged between the mounting plane of the base of base, two rolling bearing units (3) of threephase asynchronous machine (1) and channel-section steel frame (7) bottom.
2. auto magnetorheological suspension system test unit according to claim 1, it is characterized in that: described computer measurement and control system also further includes D.C. regulated power supply (39), universal seclector (40), constant current source (41), current sensing means (42), the input end of described universal seclector (40) connects respectively the output terminal of D.C. regulated power supply (39) and data collecting card (36), the output terminal of universal seclector (40) is connected to constant current source (41), constant current source (41), current sensing means (42), and the field coil connected in electrical series of MR damper (13) connects.
3. auto magnetorheological suspension system test unit according to claim 1 and 2, it is characterized in that: described computer measurement and control system also further includes rotary switch (38), the input termination data collecting card (36) of described rotary switch (38), output termination frequency converter (6).
4. auto magnetorheological suspension system test unit according to claim 2, it is characterized in that: described current sensing means (42) is current sensor, or the alternating current-direct current amp gauge, or universal electric meter, and satisfies current range and be not less than 2 amperes.
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| CN 201220335390 CN202994483U (en) | 2012-07-12 | 2012-07-12 | Test device of automobile magneto-rheological suspension system |
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| CN 201220335390 CN202994483U (en) | 2012-07-12 | 2012-07-12 | Test device of automobile magneto-rheological suspension system |
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| CN103630321B (en) * | 2013-11-25 | 2017-01-11 | 重庆大学 | System, method and device for evaluating buffering characteristic of magneto-rheological buffer |
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